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08-16-2020, 05:36 AM - 2 Likes   #1
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Nikkor-SC 55mm f1.2

this is a pre-AI lens that was purchased for use on my K-S1a project:







for comparison purposes, this is the Cosina 55/1.2 on the right:



and how it looks on the K-S1a:



08-16-2020, 05:37 AM - 2 Likes   #2
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at f1.2




I'll be working with this lens at this aperture more in the next week or two....
08-16-2020, 05:38 AM - 2 Likes   #3
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08-16-2020, 05:41 AM - 1 Like   #4
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08-16-2020, 05:42 AM - 2 Likes   #5
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and even infinity focus - which has been a concern with this project




08-16-2020, 05:42 AM - 1 Like   #6
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Very nice!
08-16-2020, 05:43 AM - 1 Like   #7
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08-16-2020, 05:43 AM   #8
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QuoteOriginally posted by krazykat Quote
Very nice!

thank you
08-16-2020, 07:49 AM - 1 Like   #9
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In theory you should hit infinity early and be able to focus slightly past infinity. Are you finding this is the case? With the very slight differences in flange focal distance if expect the lens might have enough internal adjustment to reset infinity into line up correctly even if you mount it directly into a standard Pentax mount. (this can be done with non ai Nikon lenses but isn't very secure)
08-16-2020, 10:48 AM   #10
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QuoteOriginally posted by UncleVanya Quote
In theory you should hit infinity early and be able to focus slightly past infinity. Are you finding this is the case? With the very slight differences in flange focal distance if expect the lens might have enough internal adjustment to reset infinity into line up correctly even if you mount it directly into a standard Pentax mount. (this can be done with non ai Nikon lenses but isn't very secure)
no theory - this lens will focus beyond infinity....

funny thing in comparing the mount of this lens with the prior Nikkor (35/2) on the K-S1a: this lens will turn almost all the way on the mount to where 'normal' would be for a K-mount lens, while the 35/2 will stop (hard stop) about 2/3rds of the way around....
08-16-2020, 12:45 PM - 1 Like   #11
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QuoteOriginally posted by pepperberry farm Quote
for comparison purposes, this is the Cosina 55/1.2 on the right:
Mmmm, cookies!
08-16-2020, 01:32 PM   #12
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QuoteOriginally posted by pathdoc Quote
Mmmm, cookies!
aye - cookies!
08-16-2020, 06:09 PM   #13
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QuoteOriginally posted by pepperberry farm Quote
funny thing in comparing the mount of this lens with the prior Nikkor (35/2) on the K-S1a: this lens will turn almost all the way on the mount to where 'normal' would be for a K-mount lens, while the 35/2 will stop (hard stop) about 2/3rds of the way around....
That is odd.
08-16-2020, 06:36 PM - 1 Like   #14
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QuoteOriginally posted by pepperberry farm Quote
this is a pre-AI lens that was purchased for use on my K-S1a project:

How's the feel of the aperture ring? And is there an unmarked stop (or two?) between 1.2 and 2?


QuoteOriginally posted by pepperberry farm Quote
Lovely! But I'm greedy, so I can't help but wonder how that pasture scene would've looked through a 300mm (or 500mm!) lens.
Do you think those horses would come back and pose again? Maybe they like cookies?


Also, when I look at your photo I can hear Paul Simon singing about ♫ ...the greens of summers...♫.
I wonder if Mr. Simon ever used a 55 f/1.2 with his Nikon?

08-16-2020, 07:57 PM   #15
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QuoteOriginally posted by .a.t. Quote
How's the feel of the aperture ring? And is there an unmarked stop (or two?) between 1.2 and 2?
tiny detents for the aperture stops - and there is one unmarked stop between 2 and 1.2...


QuoteQuote:
Lovely! But I'm greedy, so I can't help but wonder how that pasture scene would've looked through a 300mm (or 500mm!) lens.
Do you think those horses would come back and pose again? Maybe they like cookies?


Also, when I look at your photo I can hear Paul Simon singing about ♫ ...the greens of summers...♫.
I wonder if Mr. Simon ever used a 55 f/1.2 with his Nikon?

Paul Simon - Kodachrome (HQ) - YouTube
I'll bet he never had a 55/1.2 on his Pentax...

(:
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